HAWKSTONE O.N. 182925. 61g. 70.0 x 17.6 x 7.1 feet.Unidentified type diesel by British Polar Engines Ltd., Glasgow. 450 BHP.1948: Built by Richard Dunston Ltd., Thorne (Yard No. T 711) for Cory Tank Lighterage Ltd.,10.1.1949: Registered at London.2.1949: Completed2.1957: Departed from the Regent Oil Company wharf at Holehaven with two tank craft in tow for River Medway in blizzard and high winds and disappeared. Reported overdue and later found aground in the Estuary five miles East of Southend by the Southend Lifeboat minus barges. One barge later found in Yantlet Creek and the other at Allhallows. Believed overwhelmed by weather and driven ashore. All crew of four and two lightermen lost. Salved and returned to service. 1980: Demolished at Blackwall.